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How to Repair a Car Key Fob The key fob of yours is tossed around a lot, so the buttons may become stuck or damaged. You can try giving it a thorough check and replacing the battery, if necessary. Most cars are powered by a coin style battery, which you can purchase at big box stores as well as home improvement stores and pharmacies. Certain models require programming equipment that is only available to dealers. Dead Battery The car key fob is a compact and convenient device that makes entering your car and starting it easier than ever. What happens when you press the button multiple times, but nothing happens? It's usually due to a dead or dying battery. The battery is easily replaceable. You can locate replacements at auto parts stores, supermarkets, and some home improvement centers. However there are other features that the key fob offers might not function. This could be due to an issue with the mechanical system or electrical issue or even a programming error within the car's receiver. In these cases it's best to call a professional. The majority of manufacturers include a mechanical slot on the fob for use in case of dead cells. Most of the time, the key slot is hidden behind a cover that is attached to the handle of the fob. The physical key can be put into the slot which will allow you to unlock your door and start your car. Be sure to re-insert the key fob after you have started the vehicle! If you own a Ford with SYNC Connect, you can start the car with the key fob. The cupholder on most Fords with SYNC Connect has a backup “E blade”. It is a mechanical key that can be used to press the starter button should your key fob fail to start the vehicle. To make the most of this feature, make sure that the battery in your car is fully charged and that you go through the owner's manual to see what the procedure is. If your car still has issues after replacing the battery in your key fob you may need to speak with a locksmith or your dealer to get the fob or battery repaired. In some cases, a new battery can be used to program the key fob in your car at the dealership or select Interstate All Battery Center stores. But this will only work when the circuit board and antennas have not been damaged. Damaged Buttons Over the course of its existence your car key fob's buttons are bound to undergo many wear and wear and tear. They're prone to drops, and they are often being tossed around in pockets and purses. The jolting could cause internal components to become loose or damaged, resulting in them not responding when you press them. This problem can be fixed by following a few steps, but you might also need to consult a locksmith. In addition to an inoperable battery The most frequent reason a car key fob won't work is that it needs new batteries. These tiny coin-shaped batteries are relatively inexpensive and are easy to find them at hardware stores or large-box retailers. You can also find videos explaining how to replace the key fob battery on YouTube or in your owner's guide. However, it's important to know that some key fobs require a particular procedure to enter the programming mode needed to change the battery. In such cases, you'll need to consult your owner's manual and/or a reputable auto locksmith to ensure you're following the correct procedure. If you leave your key fob in extreme hot or cold temperatures can also cause it to stop working particularly when the battery has failed. If this happens, you'll have to call an automotive locksmith or a dealer to request a replacement fob. If you are still unable to press the buttons on your key fob, it may be because the contacts are worn out. These contacts are rubber-like and coated with an electricity-conducting film, but they can start to wear out over time due to repeated use. It is possible to fix this issue by dismantling the key fob and putting an aluminum strip over the contacts that are worn out. It's important to remember that certain key fobs can be extremely difficult to open and can't be opened safely without specialized equipment that is only accessible at a dealer. If you attempt to open it with the use of a screwdriver or other tool, you could end up damaging the internal circuit board. This could result in an even more costly repair bill. Circuit Board Issues If your key fob is still capable of unlocking your car's doors and start your engine, but it's not working as well as it used to, the problem may be with the circuit board. The circuit board is an electronic chip inside the case that transmits signals to your car telling it whether or not to close your doors, lock the trunk and even switch off your ignition. If the circuit board is damaged the key fob won't be able to send these signals. Repairing damaged circuit boards on your own If you have some technical expertise. Start by removing the battery and taking the holder and rubber button assembly from the circuit board. Clean the contacts and plastic frame with rubbing alcohol and a cotton swab. This should eliminate any corrosion that is inhibiting the circuit board from transmitting signals. After you've assembled the key fob, be sure it's in programming mode. Check your owner's guide for instructions. Many vehicle manufacturers have videos online that demonstrate how to accomplish this. If you're not confident enough to tackle it yourself, bring your key fob to a locksmith that is specialized in the model of your vehicle. Some of the more modern key fobs have an integrated receiver that allows you access your trunk, lock your doors, and switch on your ignition from some distance. They're generally more reliable and work across a greater range. If your key fob doesn't perform as well as it did in the past, it may have an internal issue that isn't working or an external antenna that is not working properly. The most likely cause of the key fob not working is a dead or low battery. It's inexpensive and easy to replace. But if the fob's buttons or circuit board is damaged, you'll have to be able to have it repaired professionally and reprogrammed. This service is provided by the majority of dealerships, but you can find a shop that specializes in your particular brand. Forgotten Key It's difficult to find your car key fob. You can turn your house upside down by retracing all your steps and searching all over. This includes in bags, drawers and under couches. In the end, you'll find it. Preventative measures are the best way to ensure that you don't lose your key fob. If you've even a little ADD or are just forgetful, make several copies and give them to your close family and friends members, so that if you lose yours, you won't spend four hours sweating and cursing yourself for the rest of your life. Most cars come with key fobs that allow you to lock and unlock your doors. You can also, in some cases set off an alarm or open the trunk. But a few of the more advanced models come with even more exciting features, such as the capability to summon your car with the press of one button. This feature isn't available on all models, but if your car is one of the ones that can do it – the Genesis GV60 or Hyundai Sonata for instance You're in good hands. If you have an extra car key fob programmed for your vehicle, you could make use of it in the event that you lose the original. You can also talk to an automotive locksmith and have them create a new key fob that's been programmed to your specific vehicle. However, before doing this, check with your dealership to see if they're able to offer an alternative key fob at a lower cost. If broken car key repair don't have an extra, the only way to start your vehicle is to contact an auto locksmith who will replace your existing key fob or cut a new one. A dealer can also do this, but you'll need to bring your vehicle in and some documents to prove ownership. But the good news is that these services are fairly inexpensive, especially compared to buying a new key from your dealer, which can cost $200-$250.